The latest generation of multipurpose rib cooled motors offers high power density,
easy configurability and built-in serviceability. They incorporate experience ABB has
gained over more than 130 years of manufacturing electric motors.
These motors set a benchmark for the industry,
offering more watts per kilogram than has ever
been achieved before with rib cooled motors.
High power density means that for a given output
you can often use a motor one frame size smaller
than with conventional products. This helps to
save space and enables more compact
installations.
AXR motors comply with main industry standards
such as API 541 and shell DEP as well as customer
specifications. abb 6.6kv motor catalogue
AXR motors have a rugged cast iron frame.
They are rib cooled motors with IC411 cooling
and IP55 protection as standard. The motors are
also available with IC416 cooling and optional
IP66 protection. Their IP66 protection has been
verified by a leading independent testing
organization.
AXR motors 6.6kv motor price list cover the output range up to
1,800 kW, and they are available in shaft heights
from 315 to 500 mm. The motors can be mounted
horizontally and vertically. For AXR motors this
catalog shows the technical data at 50 Hz and
60 Hz, and for synchronous speed from 500 to
3600 rpm.
Standard combinations
IC411 / IP55
AXR motors have an external shaft mounted
fan that uses the surrounding air for cooling.
The motors are protected against dust and water
jets. The operating principle of these motors is
shown in diagram 17 below.
IC416 / IP55
AXR motors are available with IC416 cooling.
An additional motor drives the cooling fan to
produce the cooling required for low speed
applications, especially in cases where the motor
is fed via a variable speed drive.
Protection rating IP55
• Protection against dust: as in other dust-
protected motors, some dust can enter but not
in sufficient quantities to interfere with the
motor's operation.
• Protection against water jets: water projected
by a nozzle against the motor from any direction
has no harmful effect.
Protection rating IP66
AXR motors are available with protection ratings
up to IP66.
• Protection against dust: the enclosure is
completely dust tight.
• Protection against water jets: water projected
in powerful jets (12.5 mm nozzle) against the
enclosure f
Cooling method (IC411)
• Frame surface cooled:
The primary coolant is circulated in a closed
circuit in the motor and gives its heat through
the external surface of the motor (in addition to
the heat transfer via the stator core and other
heat conducting parts) to the final coolant
which is the surrounding medium. The surface
may be plain or ribbed, with or without an outer
shell to improve the heat transfer.
• Self circulation:
The coolant is moved dependent on the
rotational speed of the main motor either by
action of the rotor alone or by means of a
component designed for this purpose and
mounted directly on the rotor of the main
motor, or by a fan or pump unit mechanically
driven by the rotor or the main motor.